Lead II Flashcards
Name 10 causes of Sinus Tachycardia
Exercise, fever, early hypoxia, hypotension/hypovolemia, AMI, amphetamines such as caffeine/cocaine, CHF, anxiety/stress, hyperthyroidism/thyroid storm, serotonin syndrome
Define sinus tachycardia
The P waves of upright, the rate is greater than 100 BPM, there is a P wave for every QRS, the PRI is less than 200 msec, the shape is normal, the QRS is 80 to 120 msec, the rhythm is regular
Define sinus bradycardia
The P wave is up right, the rate is less than 60, there is one P-wave for every QRS, there is a QRS for every P wave, the PRI is less than 200, the QRS is normal in shape and is 80 to 120, and the rhythm is regular.
List 10 causes of sinus bradycardia
Being athletic, increased vagal tone, AMI, increased, ICP, hypothermia, beta blocker and calcium channel blocker overdose, hypoxemia, sick sinus syndrome, electrolyte imbalances, hypothyroidism, idiopathic.
Define sinus arrhythmia
The P wave is upright, the rate is 60 to 100 in general, there is a P-wave for every QRS and a QRS for every P-wave, the PRI is less than 200msec, the QRS is normal in shape and ranges from 80 to 120msec, the R to R is regularly irregular

Describe the pattern of sinus arrhythmia
When a patient inhales, the rate speeds up. When a patient exhales, the rate slows down. 
What causes a sinus arrhythmia?
Sinus arrhythmia is a normal, finding if associated with inhalation and exhalation. If it is not tied to the respiratory rate, it could indicate ischemia. 
Describe a sinus arrest
The P wave is upright and round, the rate is usually 60 to 100 BPM, there is a P-wave for every QRS and a QRS for every P wave. The PRI is less than 200, the QRS is 80 to 120, the QRS is normal shaped
Thr rhythm is regular except during an unpredictable arrest were an entire PQRST cycle is dropped. 
Name six causes of a sinus arrest
Ischemia of the SA node, increased, vagal, tone, digitalis, use, quinidine use, idiopathic, and sick sinus syndrome. 
